scholarly journals Concordance between the indirect V̇O2max value estimated through the distance in Yo-Yo intermittent recovery test level 1 and the direct measurement during a treadmill protocol test in elite youth soccer players

2018 ◽  
Author(s):  
Moisés Arturo Cabrera Hernández ◽  
Luis Javier Tafur Tascon ◽  
Daniel Dylan Cohen ◽  
Sergio Andrés García-Corzo ◽  
Alexander Quiñonez Sánchez ◽  
...  
Keyword(s):  
Direct Measurement ◽  
Soccer Players ◽  
Recovery Test ◽  
Youth Soccer ◽  
Level 1 ◽  
Protocol Test ◽  
Treadmill Protocol ◽  
Test Level

Modeling Developmental Changes in the Yo-Yo Intermittent Recovery Test Level 1 in Elite Pubertal Soccer Players

2014 ◽  
Vol 9 (6) ◽  
pp. 1006-1012 ◽  
Author(s):  
Dieter Deprez ◽  
Joao Valente-dos-Santos ◽  
Manuel Coelho e Silva ◽  
Matthieu Lenoir ◽  
Renaat M. Philippaerts ◽  
...  
Keyword(s):  
Fat Mass ◽  
Motor Coordination ◽  
Fat Free Mass ◽  
Soccer Players ◽  
Aerobic Performance ◽  
Recovery Test ◽  
Youth Soccer ◽  
Biological Maturation ◽  
Level 1 ◽  
Test Level

Purpose:To model the development of soccer-specific aerobic performance, assessed by the Yo-Yo Intermittent Recovery Test Level 1 in 162 elite pubertal soccer players, age 11–14 y at baseline.Methods:Longitudinal multilevel modeling analyses comprised predictors related to growth (chronological age, body size [height and weight] and composition [fat mass, fat-free mass]), and motor coordination [3 Körperkoordination Test für Kinder subtests: jumping sideways, moving sideways, backward balancing] and estimated biological-maturation groups (earliest [>percentile 33] and latest maturers [>percentile 66]).Results:The best-fitting model on soccer-specific aerobic performance could be expressed as –3639.76 + 369.86 × age + 21.38 × age2 + 9.12 × height – 29.04 × fat mass + 0.06 × backward balance. Maturity groups had a negligible effect on soccer-specific aerobic performance (–45.32 ± 66.28; P > .05).Conclusion:The current study showed that the development of aerobic performance in elite youth soccer is related to growth and muscularity and emphasized the importance of motor coordination in the talentidentification and -development process. Note that biological maturation was excluded from the model, which might endorse the homogeneity in estimated biological-maturation status in the current elite pubertal soccer sample.

Physical and anthropometrical attributes of Australian youth soccer players

2018 ◽  
Vol 13 (5) ◽  
pp. 787-793 ◽  
Author(s):  
Brad S Keller ◽  
Annette J Raynor ◽  
Lyndell Bruce ◽  
Fiona Iredale
Keyword(s):  
Operating Characteristic ◽  
Elite Athletes ◽  
Soccer Players ◽  
Recovery Test ◽  
Youth Soccer ◽  
State Elite ◽  
Physical Attributes ◽  
Physical Tests ◽  
Level 1 ◽  
Test Level

Objectives To determine whether Australian youth soccer players of varying levels could be distinguished based on their anthropometrical and physical attributes. Design A cross-sectional observational design was used, involving six anthropometrical and physical tests for each player. Methods Participants represented three youth levels of competition, namely national elite (n = 18), state elite (n = 22) and sub-elite (n = 22). Anthropometrical and physical tests included standing height; body mass; 5, 10, 30 m sprint and 20 m ‘flying start’ sprint; zig-zag agility test; vertical jump and Yo-Yo Intermittent Recovery test level 1. A multiple analysis of variance for the main effect of cohort, with a follow-up ANOVA and Tukey's Honest Significant Difference were used to discern which attributes differed between each cohort. Receiver operating characteristic curves were calculated, providing cut-off values between cohorts. Results The national elite cohort was significantly taller than the state elite cohort (ES = 0.94) and faster than the sub-elite athletes across 30 m (ES = 0.79) and 20 m with a flying start (ES = 0.77) (P < 0.05). The national elite cohort had a significantly higher level of intermittent endurance, compared to the state elite athletes who also performed better than the sub-elite cohort. The discrepancy between groups in the Yo-Yo Intermittent Recovery test level 1 was exemplified by the receiver operating characteristic with 94.1% of national elite players running further than 1980 m, while 95.7% of state elite and 100% of sub-elite players failed to reach this distance (ES = 0.88–1.77). Conclusions It is evident that anthropometrical and physical attributes differ between youth cohorts, particularly intermittent endurance. It is important to use this knowledge to enhance the current processes used to identify future talent for success in Australian soccer.

scholarly journals Aerobic Fitness of 17-Year-Old Soccer Players Throughout the Annual Training Cycle According to Their Playing Position

GYMNASIUM ◽  
2017 ◽  
Vol XVIII (2) ◽  
pp. 156
Author(s):  
Pavel Ružbarský ◽  
Bibiana Vadašová ◽  
Tomáš Eliaš ◽  
Pavol Čech ◽  
Mário Jančošek
Keyword(s):  
Aerobic Fitness ◽  
Soccer Players ◽  
Testing Session ◽  
Test Results ◽  
Recovery Test ◽  
Total Distance ◽  
Training Cycle ◽  
Soccer Team ◽  
Level 1 ◽  
Test Level

The purpose of the study was to assess the level of aerobic fitness in U17 Slovak elite soccer players throughout the annual training cycle according to their playing position. The participants were 14 soccer players who played for the 1st league U17 soccer team. To assess their levels of aerobic fitness, players performed the Yo-Yo intermittent recovery test Level 1 (Yo-Yo IRTL1) during four different phases of the annual training cycle. The results showed that the greatest distance covered by a player was 2,476 m during the final testing session after the regular season. Therefore, we may conclude that according to the total distance covered in Yo-Yo IRTL1 players showed test results at the level of international players.

The Yo-Yo intermittent recovery test level 1 is reliable in young high-level soccer players

2014 ◽  
Vol 32 (1) ◽  
pp. 65-70 ◽  
Author(s):  
Dieter Deprez ◽  
Job Fransen ◽  
Matthieu Lenoir ◽  
Renaat Philippaerts ◽  
Roel Vaeyens
Keyword(s):  
Soccer Players ◽  
Recovery Test ◽  
Level 1 ◽  
High Level ◽  
Test Level

Reliability and validity of the Yo-Yo intermittent recovery test level 1 in young soccer players

2014 ◽  
Vol 32 (10) ◽  
pp. 903-910 ◽  
Author(s):  
Dieter Deprez ◽  
Aaron James Coutts ◽  
Matthieu Lenoir ◽  
Job Fransen ◽  
Johan Pion ◽  
...  
Keyword(s):  
Reliability And Validity ◽  
Soccer Players ◽  
Recovery Test ◽  
Level 1 ◽  
Test Level

scholarly journals Differences in Physiological Characterization between Yo-Yo Intermittent Recovery Test Level 1 and Level 2 in Japanese College Soccer Players

2011 ◽  
Vol 9 ◽  
pp. 33-38 ◽  
Author(s):  
Shin-ya Ueda ◽  
Akira Yamanaka ◽  
Takahiro Yoshikawa ◽  
Yoshihiro Katsura ◽  
Tatsuya Usui ◽  
...  
Keyword(s):  
Soccer Players ◽  
Recovery Test ◽  
Physiological Characterization ◽  
Level 1 ◽  
Test Level ◽  
Level 2

Validity of the Yo-Yo Intermittent Recovery Test Level 1 for Direct Measurement or Indirect Estimation of Maximal Oxygen Uptake in Female Soccer Players

2014 ◽  
Vol 9 (5) ◽  
pp. 825-831 ◽  
Author(s):  
Vanessa Martínez-Lagunas ◽  
Ulrich Hartmann
Keyword(s):  
Maximal Oxygen Consumption ◽  
Random Order ◽  
Soccer Players ◽  
Limits Of Agreement ◽  
Indirect Estimation ◽  
Recovery Test ◽  
Direct Assessment ◽  
Level 1 ◽  
Positive Correlations ◽  
Test Level

Purpose:To evaluate the validity of the Yo-Yo Intermittent Recovery Test Level 1 (YYIR1) for the direct assessment and the indirect estimation of maximal oxygen consumption (VO2max) in female soccer players compared with a maximal laboratory treadmill test (LTT).Methods:Eighteen female soccer players (21.5 ± 3.4 y, 165.6 ± 7.5 cm, 63.3 ± 7.4 kg; mean ± SD) completed an LTT and a YYIR1 in random order (1 wk apart). Their VO2max was directly measured via portable spirometry during both tests and indirectly estimated from a published non-gender-specific formula (YYIR1-F1).Results:The measured VO2max values in LTT and YYIR1 were 55.0 ± 5.3 and 49.9 ± 4.9 mL · kg−1 · min−1, respectively, while the estimated VO2max values from YYIR1-F1 corresponded to 45.2 ± 3.4 mL · kg−1 · min−1. Large positive correlations between the VO2max values from YYIR1 and LTT (r = .83, P < .001, 90% confidence interval = .64–.92) and YYIR1-F1 and LTT (r = .67, P = .002, .37–.84) were found. However, the YYIR1 significantly underestimated players’ VO2max by 9.4% compared with LTT (P < .001) with Bland-Altman 95% limits of agreement ranging from –20.0% to 1.4%. A significant underestimation from the YYIR1-F1 (P < .001) was also identified (17.8% with Bland-Altman 95% limits of agreement ranging from –31.8% to –3.8%).Conclusions:The YYIR1 and YYIR1-F1 are not accurate methods for the direct assessment or indirect estimation of VO2max in female soccer players. The YYIR1-F1 lacks gender specificity, which might have been the reason for its larger error.

scholarly journals Concurrent Validity of a Rugby-Specific Yo-Yo Intermittent Recovery Test (Level 1) for Assessing Match-Related Running Performance

2021 ◽  
Vol 35 (1) ◽  
pp. 176-182 ◽  
Author(s):  
Nick Dobbin ◽  
Jamie Highton ◽  
Samantha L. Moss ◽  
Richard Hunwicks ◽  
Craig Twist
Keyword(s):  
Concurrent Validity ◽  
Running Performance ◽  
Recovery Test ◽  
Level 1 ◽  
Test Level
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